The Palaszczuk government's last-ditch effort to lure a cross bench MP into supporting its lockout legislation has failed to impress the Katter Party MPs, who are no more convinced than when it went into the meeting.

Premier Annastacia Palaszczuk and Attorney-General Yvette D'Ath sat down with Shane Knuth and Robbie Katter of KAP and Labor-turned-independent MP Billy Gordon in a last-minute attempt to win the vote it needs to pass the legislation, which would lead to either a 2am or 3am last drinks call across the state, depending on whether a 1am lockout was in place.

The vote is expected to be held during the Wednesday Parliament sitting. The government has invoked the emotional reasons behind the legislation in its argument, saying that "doing nothing is not an option".

The LNP formalised its opposition to the laws last week, ruling out its 42 votes and leaving the government one short of what it needs to pass its hallmark legislation.

Mr Gordon went into the meeting with Ms Palaszczuk saying he had seen "nothing substantial" from the government to change his position on the laws, having previously indicated he would vote no.

Ms Palaszczuk emerged from the meeting with the Katter's without mentioning Mr Gordon, but said she still held out hope.

"We've had very constructive discussions today with both Shane Knuth and Robbie Katter. We put very clearly the government's position, how important these laws are for families right across the state, how these laws will curb the amount of alcohol-fuelled violence and these discussions will continue," she said, before leaving for Labor's caucus meeting.

The government is attempting to pass its laws while NSW Mike Baird comes under pressure for similar laws in Sydney.